What would you add to this 75?

[H.K.Luterman]

Hello friends,

My 75 currently houses a blood parrot cichlid (who is the Queen and High Potentate of everything), two male senegal bichirs (a big wild type and a little albino), and a small ctenopoma (bought as an adult and it never grew much bigger; I think it was turned in from a pervious owner at the store).

Here's a video to show what kind of room I have going on. 
 

 

The tank is kept at 79-80F, so whatever I add needs to like it toasty. Because of the plant load, nitrates are never over 50, and I think they only get that high because I add Easy Green. Ph is 7.2.

I feel like I want to add something that swims midwater. Obviously they have to be big enough to not be a snack - 3in is usually the recommended size to cohabitate with bichirs and ctenopoma. A school of congo tetras is an option. But what would YOU add? I'm open to ideas.

I've been agonizing over this for 6 months to a year, lol!

 

Edit: Forgot to mention that cichlids are probably out, since the blood parrot kept starting fights with my blue acara that was previously living in there.

Edited February 8 by H.K.Luterman

[AndEEss]

Blue eyed/Lamp eye congo tetras?